Photogrammetry using blender to Create a Dense Mesh and automatically texture them
As others stated on the comments Blender is not the tool to create cloud points from images.

I doubt there is any free, paid or open source photogrammetry tool that works on a 32 bit OS. Photogrammetry would require a more powerful platform, as it  will generate huge amounts of information to create what you call "a dense mesh cloud". A 32bit machine can only deal with 4GB of memory (and that includes the Operating system,that will take at least one GB, leaving you with only 3GB of ram to work with). But even if by some miracle hack you would be able to generate generate objects on such platform, you will hit the limits of the hardware before you can manipulate any of that information.

3D modeling and rendering can be very demanding for any computer, a common mistake folks make is to creating projects that are more ambitious than the resources available to them.

Think of an alternative, more realistic or down to earth way to create what you want within your available means.